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NVD / CVE Program· CNA Linux

CVE-2026-97456: ACPICA: Fix condition check in acpi_ps_parse_loop()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 4.18, 4c22c9842c53b824743bdf1d8d19e1cdb908f82e, 5d16f40b019e59df81deb594ed4eafefc8e43cc0; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.

Low priority for now. Upgrade to Linux Linux 4.18, 4c22c9842c53b824743bdf1d8d19e1cdb908f82e, 5d16f40b019e59df81deb594ed4eafefc8e43cc0; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: ACPICA: Fix condition check in acpi_ps_parse_loop() Fix condition check for AML_ELSE_OP in acpi_ps_parse_loop() to prevent out-of-bounds access.

—No exploit Fix available
Published
Sep 24, 2026
Updated
Oct 3, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2e78935d1e27d31955ad2dad4abe6c453cf669fd, 4.18affected
    • 5088814a6e931350e5bd29f5d59fa40c6dbbdf10 and later · before c838d32fbe02a6d426aebf95d2aef97de92ddc43affected · git
    • 5088814a6e931350e5bd29f5d59fa40c6dbbdf10 and later · before b79f5cb2131956a7d2c99870336d9fcc6db80c4baffected · git
    • 5088814a6e931350e5bd29f5d59fa40c6dbbdf10 and later · before de2bbc8dbe7048f20f0a783a81e712fd3664de5baffected · git
    • 5088814a6e931350e5bd29f5d59fa40c6dbbdf10 and later · before 4c22c9842c53b824743bdf1d8d19e1cdb908f82eaffected · git
    • 5088814a6e931350e5bd29f5d59fa40c6dbbdf10 and later · before a477c6ef5335d2d0613ff7c1779a8209f16627c5affected · git
    • 5088814a6e931350e5bd29f5d59fa40c6dbbdf10 and later · before 5d16f40b019e59df81deb594ed4eafefc8e43cc0affected · git
    • 5088814a6e931350e5bd29f5d59fa40c6dbbdf10 and later · before 8de27e2d83c0d07ae9443c6304575b0609394bfdaffected · git
    • 4.17.3 and later · before 4.18affected · semver
    • before 4.18not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-97454Sep 24, 2026 · ACPICA: add boundary checks in acpi_ps_get_next_field()
    30Monitor
  • ← EarlierCVE-2026-97455Sep 24, 2026 · ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
    33Monitor
  • Later →CVE-2026-97472Sep 24, 2026 · ipv6: addrconf: fix temp address generation after prefix deprecation
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux4.18Vendor (CNA)
Linux Linux4c22c9842c53b824743bdf1d8d19e1cdb908f82eVendor (CNA)
Linux Linux5d16f40b019e59df81deb594ed4eafefc8e43cc0Vendor (CNA)
Linux Linux8de27e2d83c0d07ae9443c6304575b0609394bfdVendor (CNA)
Linux Linuxa477c6ef5335d2d0613ff7c1779a8209f16627c5Vendor (CNA)
Linux Linuxb79f5cb2131956a7d2c99870336d9fcc6db80c4bVendor (CNA)
Linux Linuxc838d32fbe02a6d426aebf95d2aef97de92ddc43Vendor (CNA)
Linux Linuxde2bbc8dbe7048f20f0a783a81e712fd3664de5bVendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.158.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records